Niklas, I have no background in physics and science, but from my experience with bismuth and TM I carry TM in one pocket for "shooting" and bismuth in another for finishing off cripples. Bismuth does strange things. I have no confidence in it.
Crush a bismuth and TM pellet: the bismuth shatters easily into many particles. TM is malleable like lead. My guess is that it stays together like lead. Does some bismuth shatter at ignition, leaving the muzzle in particles?
It's a mystery to me. Friends who've shot geese with bismuth found silver streaks on large bones as if it had shattered into powder and particles. I've sluiced cripples under a Niagara of shot and water with little and no effect.
I swear by TM and use bismuth as described because I have a couple jugs of it.
